The replacement for
the E-Type, the Jaguar XJS matched the XJ Sedans in longevity
and in variations (XJS, XJS-HE, XJ-SC [Cabriolet], XJS Convertible).
Check our XJS Model
Guide below for more details. Below are the Jaguar conversions
and Jaguar parts available from John's Cars.

Where it all began, the Chevy V8
conversion for the classic XJ Sedan and all XJS. With
our conversion kit, you can use the Chevy motor and automatic
transmission of your choice to create your dream Jaguar.

Jaguar picked GM for its A/C, power steering
and air pumps  now YOU can choose a GM alternator
and exorcise The Prince of Darkness (AKA Joseph Lucas) from
your kitty. Keep the cats eyes bright with the latest
Johns Cars retrofit: GMALT, a GM alternator
kit for your XJ.

Ready to buy a Jaguar and make your
dreams come true? Don't go looking without our checklist
of common problems and look fors.

New
Products

JCI now offers a new option on our
Chevy V8 conversion that will let you re-use the T400 transmission
that came behind the V12 motor (1978 to 1992 XJS). The
option is called "J400".

XJS Model Guide

The replacement for the E-Type, the Jaguar XJS matched the XJ Sedans in longevity and
in variations (XJS, XJS-HE, XJ-SC [Cabriolet], XJS Convertible).

XJS

1976 to 1980. Two door Coupe introduced in late 1975 as
successor to the EType. Four place car with room for two. Built on 102" wheelbase.
Supplied with the Fuel injection V12 only, alloy wheels, and SII Sedan type accessories.
Rear sway bar, 3.31 rear axle with "XJ-S" lettering. No cars manufactured
in 1981.

XJS-HE

1982 to 1996. Chrome top blades for the bumpers, wood trim
to dash and door panels, new 928ish 5-spoke wheels and Series 3 Sedan refinements
added. A high-efficiency (HE) motor and 2.88 gear ratio combined to give fuel
economy second only to Rolls-Royce. In 1987, the XJ-SC was Jaguar's re-entry into
the open air market, not a "true" convertible, more like a Triumph Stag take-off
(2 seater only). 1989 introduced Marelli ignition, ABS brakes, BBS style alloy wheels and
a factory built convertible (the 86 to 88 convertibles had their tops chopped in the
U.S.A. by Hess and Eisenhart  parts for this convertible mechanism are non-existent
 think twice before you buy one). 1990 XJS have tilt-wheel steering column and
drivers side airbag. The 1992 model received a facelift including Eurostyle single
headlamp units, wrap-around taillights and new bumpers with side marker lamps built-in.
In 1994, the 4.0 6-cyl and outboard rear brakes became standard. The 6.0L V12
option available through 1995. Replaced by the XK8 in 1996.

ALL XJS

All cars have fully independent suspension and four wheel
disc brakes (inboard on the rear until 1994). Brake and suspension components
virtually identical on all XJ cars since 1974. All models have Lucas electrics unless
otherwise noted. V12 cars featured positraction rear axles. Telescoping steering column
all models  tilt not available. U.S. V12 have BW trans until 19771÷2, then all
19771÷2-on V12 use a GM T400 with a special "Jaguar only" case that will not
adapt to earlier V12 engines, Jaguar 6 cylinder motors nor Chevy V8's. 6 cylinders are 4.2
liters (258 inches), V12 are 5.3 liters (327 inches) or 6.0L. There are exceptions to
everything. If you are presented a car that is "special", especially year or
model wise  BE CAUTIOUS.

XJS VIN Guide

The following table lists the starting VIN (vehicle identification number) for each USA
model year. Example: All 1985 XJS fall between 117339 and 125019 (last 6
digits). Your VIN is important because it is the final authority on when your car
was built and what components apply to it. Keep you VIN number handy when ordering
parts for your Jaguar.

The VIN is typically located on the driver's windshield pillar or
the driver's door or jam. On USA cars federal law specifies that it be permanently
affixed in the dash area. Jaguar cars have a plate that is riveted to the windshield
(roof) post on the driver's side. Gray market cars usually have a metal tag glued to the
dash pad. Additionally this number is stamped into the RH fender brace or cowl brace and
finally it is on the door or door jamb (by the hinge on early sedans, lock striker on XJS)
on a embossed label. All three should match - be cautious if they do not. The label is
often painted over but usually you can still read it. This is where the build date, i.e.,
8/79 will be found. Earlier Sedans have a metal plate with engine, transmission, body
information stamped in it that is riveted to the fender well. European cars have a 2 x
3" label with similar information under the hood. The color and trim codes are
usually found on 1980-> stick-on labels with the VIN.

You may purchase via PayPal. But you will get better
customer service and sometimes lower prices by ordering via telephone
at (214)426-4100.

Jaguar picked GM for its A/C, power steering
and air pump  now YOU can choose a GM alternator
and exorcise The Prince of Darkness (AKA Joseph Lucas) from your
kitty. Keep the cats eyes bright with the latest Johns
Cars retrofit:

GMALT, a GM alternator kit
for your XJ.

The kit is built to JCI standard specifications:
100% bolt-in, heavy duty parts (the adaptor bracket is 1/4"
steel), all needed hardware, plug-in wiring (no splices plus
it maintains the original color codes so your mechanics
purist nose wont suffer a fatal attack) and instructions
of course. No cutting, welding, dents, drilling, or other modifications
are needed. Black zinc plated so you don't have to paint it.
Add 10 minutes (to read the instructions) to the normal R&R
time and change for the better to the best!

Kit does not include the alternator, what youll
need is listed in the table below. For 68 to 87 6-cyl XJ Sedans,
I recommend a GM 78 Amp unit. If your kitty has a TV,
FAX machine and Boom Box, you can still be happy with a heavy
duty 94 Amps unit. V12 cars require more juice, so 94 Amps is
recommended. Contact your local parts emporium and ask for the
part number on the list. Remember youll need a new excuse
to be late now  I am sure the cat will think of something.

Jaguar
Model

68
to 87 XJ6 & XJ12
All V12 XJS

Vendor

78 Amp

94 Amp

Chevrolet
Autozone
Car Quest
Delco Reman.
Lester
NAPA
Pep Boys

1101307
DL7273-6
01-504-6
321-247
7273-6
213-4350C
7273-6

1101308
DL7294-6
01-504-6
321-267
7294-6
213-4356C
7294-6

New 94 Amp
AlternatorBrand New - No Core Charge
$118.33

GMALT

A7294NEW

$75.00

$118.33

You may purchase via PayPal. But you will get
better customer service and sometimes lower prices by ordering
via telephone at (214)426-4100.